ID · tint law reference
Idaho window tint laws
Last verified September 13, 2026 · Idaho Code § 49-944
Legal tint limits at a glance
VLT is the share of light the window must let through — a lower number is darker film, and the reading includes the factory glass.
| Window | Sedans | SUVs, vans & trucks |
|---|---|---|
| Windshield | Non-reflective tint below the AS-1 line prohibited (or below a line 6 inches from the top if no AS-1 line is identifiable) | Same AS-1/6-inch rule as sedan |
| Front side | 35% VLT or lighter | 35% VLT or lighter |
| Back side | 20% VLT or lighter | 20% VLT or lighter |
| Rear | 35% VLT or lighter | 35% VLT or lighter |
Dual side mirrors required if the rear is tinted? Not stated in the sources we checked.
Is my tint legal here?
Film darkness and glass darkness multiply. Enter the film you are considering and the VLT of the bare glass to get the number a meter would read.
70 for tinted OEM glass, 80 for clear
Net VLT 14% 20% film × 70% glass
Pass/fail compares net VLT against the limits on this page only. Some states apply a measurement tolerance — see Measurement tolerance below — and none of this replaces a meter reading on your own glass.
The rest of the rule
Reflectivity
Maximum 35% luminous reflectance (±3%), all windows
Colors
Not specified in the statute text obtained
Medical exemption
yes - written verification from a licensed physician allows 70% VLT (±3%) windshield / 20% VLT (±3%) windows, reflectance still capped at 35% (±3%)
Stickers & certification
Not specified in the statute text obtained
Measurement tolerance
±3%
Penalties
Infraction (civil violation)
Notes
Statute text fetched directly from the Idaho Legislature site. The 'front side windows and rear window' are grouped at 35% minimum while 'rear-side windows' get a lower 20% floor per the fetched text -- this pairing is unusual versus most states and is transcribed exactly as retrieved.
Idaho tint questions
What is the darkest legal tint in Idaho?
For a sedan in Idaho, front side windows must let at least 35% of light through, back side windows at least 20%, and the rear window at least 35%. Lower VLT means darker glass, so those percentages are floors, not targets, and the meter reads the film and the factory glass together.
Is 20% tint legal in Idaho?
No, not on the front side windows. Idaho requires at least 35% VLT there and 20% is darker than that, before you even account for the factory glass, which makes the reading darker still. The back side windows have a 20% floor, so 20% film can be legal there.
Can I tint the windshield in Idaho?
Idaho's rule for the windshield: Non-reflective tint below the AS-1 line prohibited (or below a line 6 inches from the top if no AS-1 line is identifiable)
Does Idaho allow a medical exemption for darker tint?
What the source says: yes - written verification from a licensed physician allows 70% VLT (±3%) windshield / 20% VLT (±3%) windows, reflectance still capped at 35% (±3%) Confirm the current process with the agency named before you have film installed.
Do I need a tint sticker or certificate in Idaho?
Not specified in the statute text obtained
Where this comes from
Statute cited: Idaho Code § 49-944
Checked against the state's own statute or DMV page on September 13, 2026. Laws change; if you find a newer rule, email admin@getpeelboard.com.
Legal disclaimer: general information, not legal advice; verify with your DMV.